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    • 91. 发明授权
    • Process for producing N-acylphenylalanines
    • N-酰基苯丙氨酸的制备方法
    • US4612388A
    • 1986-09-16
    • US719300
    • 1985-04-03
    • Ryuichi MitaToshio KatohChojiro HiguchiAkihiro Yamaguchi
    • Ryuichi MitaToshio KatohChojiro HiguchiAkihiro Yamaguchi
    • C07C231/10C07C67/00C07C231/00C07C231/12C07C233/46C07C233/47C07C233/82C07C233/83C07C99/06
    • C07C233/46
    • Disclosed herein is a process for producing an N-acyl-substituted or unsubstituted phenylalanine comprising hydrolyzing a 2-substituted-4-substituted or unsubstituted benzylidene-5-oxazolone with alkali, adjusting pH of the reaction solution containing its hydrolysis product with acid at 5-9 and reducing the resultant reaction solution catalytically in the presence of a palladium or platinum reducing catalyst.In accordance with the process of the present invention, time duration required for effecting the reduction can be shortened markedly in comparison with the reduction in an aqueous strong alkaline solution. Moreover, the catalyst recovered after completion of the reduction can be used repeatedly without any additional treatment and without any observed lowering in its activity. Accordingly, the reduction using the recovered catalyst may proceed in practically the same time as in the case of using a fresh catalyst.In the process of the present invention, the reduction is carried out continuously without isolating the alkaline hydrolysis product, i.e., a substituted or unsubstituted N-acylaminocinnamic acid from the reaction mixture, so that the process is featured advantageously by simplified process and improved overall yield.
    • 本文公开了N-酰基取代或未取代的苯丙氨酸的制备方法,其包括用碱水解2-取代-4-取代或未取代的亚苄基-5-恶唑酮,调节含有其水解产物的反应溶液的pH为5 -9并在钯或铂还原催化剂的存在下催化还原所得的反应溶液。 根据本发明的方法,与强碱性水溶液的降低相比,可以显着缩短实现还原所需的时间。 此外,还原后还原反应的催化剂可以重复使用,无需任何额外的处理,并且没有观察到其活性降低。 因此,使用回收的催化剂的还原可以与使用新鲜催化剂的情况几乎相同的时间进行。 在本发明的方法中,还原是从反应混合物中分离碱性水解产物,即取代或未取代的N-酰氨基肉桂酸,连续进行,使得该方法有利地通过简化的方法和改进的总产率 。
    • 97. 发明申请
    • Method for drawing object having rough model and detailed model
    • 具有粗糙模型和详细模型的绘制对象的方法
    • US20050151732A1
    • 2005-07-14
    • US11011158
    • 2004-12-15
    • Akihiro YamaguchiAkihiko Yoshida
    • Akihiro YamaguchiAkihiko Yoshida
    • A63F13/00G06T15/00G06T15/40
    • G06T15/10G06T2210/36
    • Detailed model data having numerous polygons and rough model data having fewer polygons are prepared for one object. A rectangular parallelepiped including the entire object is defined as a bounding box. A virtual three-dimensional space is perspective-transformed to divide an image-drawing field, which is an image drawing range, into a far image-drawing field and a near image-drawing field according to a distance from a viewpoint of virtual camera. When at least a part of the bounding box is included in the far image-drawing field, polygons of rough model data included in the far image-drawing field are drawn in a frame buffer. When at least a part of the bounding box is included in the near image-drawing field, polygons of detailed model data included in the near image-drawing field are drawn in a frame buffer.
    • 为一个对象准备具有多个多边形的详细模型数据和具有较少多边形的粗略模型数据。 包括整个对象的长方体被定义为边界框。 透视变换虚拟三维空间,根据与虚拟摄像机的视点的距离,将作为图像绘制范围的图像绘制区域划分为远的图像绘制场和近图像绘制场。 当边界框的至少一部分被包括在远图像绘制区域中时,包括在远图像绘制区域中的粗略模型数据的多边形被绘制在帧缓冲器中。 当边界框的至少一部分被包括在近图像绘制区域中时,包括在近图像绘制区域中的详细模型数据的多边形被绘制在帧缓冲器中。
    • 98. 发明授权
    • Method for removing black film from skirt of CRT front panel
    • 从CRT前面板裙部去除黑色薄膜的方法
    • US6010386A
    • 2000-01-04
    • US203316
    • 1998-12-01
    • Masahisa OkamotoAkihiro Yamaguchi
    • Masahisa OkamotoAkihiro Yamaguchi
    • H01J9/227H01J9/38H01J9/00
    • H01J9/2278H01J9/38H01J2209/017
    • A method for manufacturing a cathode ray tube includes the steps of applying a black substance to the inner surface of a glass panel, immersing the skirt inner wall and the sealing surface of the glass panel in a glass dissolving liquid for etching, and removing the black substance adhered to the skirt inner wall and the sealing surface by a removing means while spraying a cleaning liquid on the inner surface of the glass panel, thereby forming the desired black matrix film on the front inner wall of the glass panel. Therefore, the excess black substance coating film adhered to the skirt inner wall and the sealing surface of the skirt portion of the glass panel can be removed effectively, and the occurrence of minute flaws that adversely affect the production and life of the cathode ray tube is prevented.
    • 阴极射线管的制造方法包括以下步骤:将黑色物质施加到玻璃面板的内表面,将玻璃面板的裙部内壁和密封面浸渍在用于蚀刻的玻璃溶解液中,除去黑色 物质在玻璃面板的内表面上喷洒清洗液体时,通过除去装置粘附在裙部内壁和密封面上,从而在玻璃面板的前内壁上形成所需的黑色矩阵膜。 因此,可以有效地除去附着在玻璃面板的裙部内壁和裙部的密封面上的过量的黑色物质涂膜,并且对阴极射线管的生产和使用寿命产生不利影响的微小缺陷的发生是 防止了
    • 99. 发明授权
    • Aromatic dinitro and diamino intermediates
    • 芳香二硝基和二氨基中间体
    • US5710334A
    • 1998-01-20
    • US453073
    • 1995-05-26
    • Yuko IshiharaMitsunori MatsuoKeizaburo YamaguchiAkihiro Yamaguchi
    • Yuko IshiharaMitsunori MatsuoKeizaburo YamaguchiAkihiro Yamaguchi
    • C07C201/12C07C205/45C07C221/00C07C225/22C08G73/10C08G73/12C08J5/18C08L79/08C07C217/84C07C217/90
    • C08G73/10C08G73/1007C08G73/1014C08G73/1017C08G73/1067Y10T428/31504Y10T428/31721
    • This invention relates to a novel thermoplastic and amorphous polyimide which is readily soluble in organic solvent, a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the thermoplastic polyimide and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition, a polyimide-based composite obtained by molding the above soluble and thermoplastic polyimide in combination with a fibrous reinforcement, and a fibrous reinforcement having a surface modified with the above polyimide. The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: ##STR1## wherein m and n are individually an integer of 0 or 1, and R is ##STR2## The polyimide of the invention is essentially amorphous, excellent in melt flow stability in the decreased temperature as compared with conventionally known polyimide and has greatly improved processability. The polyimide of the invention obtained by using a novel aromatic diamino compound as a monomer can control various properties such as melt flow ability and solubility in solvents by side chains and not by principal chain of polyimide. Thus, excellent melt flow property and solubility in solvents can be obtained while maintaining high heat resistance and adhesive property which are derived from benzophenone structure of the diamino compound of the the invention.
    • 本发明涉及易溶于有机溶剂的新型热塑性和无定形聚酰亚胺,用于聚酰亚胺的新型芳族二氨基化合物及其制备方法,包含热塑性聚酰亚胺和纤维增强剂的聚酰亚胺基树脂组合物, 用于制备树脂组合物的树脂组合物的注塑制品,通过将上述可溶性和热塑性聚酰亚胺与纤维增强剂组合成型而获得的聚酰亚胺类复合材料和具有用上述聚酰亚胺改性的表面的纤维增强剂。 聚酰亚胺包含必需的结构单元,其具有一个或多个下式的重复结构单元:其中m和n分别为0或1的整数,且R为“无定形”,优异的 与传统已知的聚酰亚胺相比在降低的温度下的熔体流动稳定性,并且具有极大的改进的加工性能。 通过使用新颖的芳族二氨基化合物作为单体获得的本发明的聚酰亚胺可以通过侧链而不是聚酰亚胺的主链来控制各种性能如熔体流动性和在溶剂中的溶解度。 因此,在保持由本发明的二氨基化合物的二苯甲酮结构得到的高耐热性和粘合性的同时,可以获得优异的熔体流动性和溶剂中的溶解性。
    • 100. 发明授权
    • Linear polyamic acid, linear polyimide and thermoset polyimide
    • 线性聚酰胺酸,线性聚酰亚胺和热固性聚酰亚胺
    • US5708128A
    • 1998-01-13
    • US668836
    • 1996-06-24
    • Hideaki OikawaShoji TamaiMasahiro OhtaAkihiro Yamaguchi
    • Hideaki OikawaShoji TamaiMasahiro OhtaAkihiro Yamaguchi
    • C08G73/10C08G69/26
    • C08G73/101C08G73/1071Y10T428/31504
    • Novel thermoset polyimide and composite materials comprising the thermoset polyimides and a fibrous reinforcement are prepared according to this invention. The thermoset polyimides are obtained by heat-treating a linear polyamic acid or a linear polyimide prepared by using 4,4'-bis(3-aminophenoxy)biphenyl and pyromellitic dianhydride as essential monomers or by adding 4,4'-diaminodiphenyl ether or 3,3',4,4'-biphenyltetracarboxylic dianhydride to the essential monomers and by end-capping the molecular chain end with an aromatic dicarboxylic anhydride having a carbon-carbon triple bond. The thermoset polyimides have essential excellent properties of thermoplastic polyimide and additionally has enhanced heat resistance and improved mechanical properties. The thermoset polyimide can be used to provide various kinds of composite materials for aircraft matrices, electric and electronic appliances and others.
    • 根据本发明制备了新型热固性聚酰亚胺和包含热固性聚酰亚胺和纤维增强材料的复合材料。 热固性聚酰亚胺通过热处理线性聚酰胺酸或通过使用4,4'-双(3-氨基苯氧基)联苯和均苯四酸二酐作为必需单体制备的线性聚酰亚胺或通过加入4,4'-二氨基二苯醚或3 ,3',4,4'-联苯四羧酸二酐加入到基本单体中,并通过用具有碳 - 碳三键的芳族二羧酸酐封端分子链末端。 热固性聚酰亚胺具有热塑性聚酰亚胺的基本优异性能,并且还具有增强的耐热性和改善的机械性能。 热固性聚酰亚胺可用于为飞机基体,电气和电子设备等提供各种复合材料。